A psychologist who deals in counseling as well as assisting recovering alcoholics. His character bears a physical resemblance to the American actor Wilford Brimley and Shunsaku Ban from Astroboy. Naoki Urasawa has used the physical appearance of Brimley in the Pluto manga as well. First seen in Chapter 49.

He is caught up in the mystery surrounding the Monster after one of his patients, Richard Braun, supposedly dies in a drunken accident while investigating Johan Liebert. Later on, he becomes guardian to Dieter and aids Tenma in any way he can while defending Tenma's character. He also provides psychological care to Nina, Eva, and others.